Valve



P. I. HUBIN.

VALVE.

APPLICATION FILED ocr. I2, 1920.

Patented Apr. 11, 1922.

IN VEN T01? PJ/YUJ/Y WITNESSES A TTORNEYS PATRICK LT. HUBIN, OF CLIIETON7 NEW JERSEY.

VALVE.

Specification of Letters Patent.

Patented. Apr. 1 1., 1922.

Application filed October 12, 1920. Serial No. 416,384.

To all fw /Lom @'25 may concern Be it known that I, Farmen J. Henin, a citizen of the United States, .and a resident of Clifton, in the county of Passaic and State of New Jersey, have invented a new and Improved Valve, of which the following is a full, clear, and exact description.

My invention relates to valves, and more particularly to valves having a thermostatic action, my more particular purpose being to provide a valve and mechanism associated therewith for use upon radiators and the like.

My invention comprehends a heat-controlled and self-closing valve carried in a casing, so arranged that the casing and its contents can be removed together as a unit and in practice may be treated much after the manner of a joint of pipe.

The object of the invention is to provide a thermostatic or .automatic air valve for use on radiators of steam heating systems so as to permit the air in the system and particularly in the radiators to escape or exhaust to facilitate the entrance of steam and hasten the heating action, and to close under the action of heatfrom the steam so as to prevent the escape thereof, thereby insuring of a more eiiicient heating action.

Reference may be had to the accompanying drawing forming a part of the specilication, in which like characters of reference indicate like parts throughout the several figures.

Figure 1 is a side elevation showing my improved mechanism as applied to a radi ator; and

Figure 2 is a fragmentary view, partly in section, and partly broken away, and showing the details of the valve mechanism.

A boiler appears at 3 and located over the same is a floor 4. A pipe 5 extends from the boiler 3 to .a radiator 6, communication through this pipe being controlled by means of a valve 7.

An air pipe is shown at 8 and terminates at 9 in a line 3a, so arranged that there is at all times maintained a partial vacuum within the air pipe 8.

My improved valve casing appears at 11 and is connected by a coupling 10 with the air pipe 8. The valve casing 11 is provided with a screw cap 12 detachably fitted upon it, and by removing this cap the mechanism within the casing is readily removed.

The casing 11 is provided with a cylindrical compartment 14 and with a pair of passages 15, 16 communicating with this compartment. A screw plug 17 is fitted into the compartment 14 and for this purpose is provided with .a threaded upper portion 18, the interior of the casing 11 being` threaded to match the same. The screw plug 17 is further provided with a slot 19 into which a screw driver is inserted for the purpose of turning the screw plug and thereby adjusting it or effecting its removal.

The screw plug 17 is made of expansible metal, that is, metal having a high coefficient of expansion from heat, and is provided with a reduced smooth or Unthreaded lower portion 2O to freely move or expand in the casing. This reduced portion is provided with a recess or guide socket 21 extending axially up into it a little distance at the bottom, as indicated in Figure 2. A valve is shown at 23 and is provided with a stem 24 extending axially thereof or through it, this stem being provided with a protruding portion 25 of reduced diameter at the bottom and disposed in the passage 16, while the stem 24 extending upwardly from the top is disposed in the recess or guide socket 21. The valve 23 normally falls by its weight and closes the passage 16 due to the tapered or conical lower portion thereof and said valve is guided in its movements by engagement of the stem 24 and the portion 25 with the recess and passage respectively.

The operation of my device is as follows: vll/ith the furnace and boiler in action, a partial vacuum is formed within the pipe 8, and this tends to allow an expansion of air within the radiator 6. When the radiator is heated it is, of course, heated with steam, and this steam displaces any air re maining within the radiator. The air passes out through the passage 16 and in so doing lifts the valve 23. By the time the air is all out of the radiator the screw plug 17, by its expansion from the increasing heat, forces downwardly and moves the valve 23 against its seat so as to close the passage 16. When this is accomplished there is no escape of steam from the radiator past this valve.

Referring more particularly to Figure it will be noted that the valve 23, and all parts immediately associated therewith, together with the screw plug 17, are contained within the casing 11, and that this casing` has such simple :form that it may in practice be treated merely as a short piece of piping.

rlhe casing l1 with its contents may thus VVhenthe steam pressure goes down, the

seating ofthe valve 23 will close thepassage 16 and thus prevent the entranceot air. Thus a loweringoi the steam pressure does not cause air to 4enter the radiator. only in instances where the air creepsf in as, for instance, after; the boiler has beenl cold for several hours, that thev valve 23 must be lifted in order to allow lthe escape of air as above described.

l do not limit myself to the precise rinerchanisin: shown, as variations may ,'be`

made' therefrom without departing from .my

inventioin' thescope of which is commen'su rate with my claims,

Having thus described inyinvention, l claimas new and desire to securel by Letters Patent l. A. valve of the class described conr-l prising a casing;having` an voutlet extending through the bottom thereof and aninlet tending axially through the bottom` and laterally through thefside ofthe easing,v Y

plug` adjustably mounted in the casing and formed ol. material having' a high coellicient ol expansion, the lower portion ol" the plug being 'spaced from the inner surface of the easingl and the lower end thereof being spaced from the bottom of the casingrsaid plug` having` an axial recess in the bottom, a valve disposed to normally close the inlet and having stems engaging the axial por ktion of the inlet and the recess to guide the valve in its movement7 said plug when expanded holding said valve against its seat. 2. A valve of the class described comprising a cylindrical casing provided lwith an interiorly threaded upper' portion and a smooth lower portion7 said casing having; a downward extensionv anda passage leading into the same from the bottom ofthe casing,` to form an outlet, an attaching stem Vprojecting` at one side of the casing' near thefbottom thereof and provided' with an inlet passage extendingv to the axis of the cas-A ing and upwardly through the bottoni thereof an expansible plug having a threaded upperv portion engaging the interior threads of the casingandprovided with means whereby it may be turned to` ad# just it in the casing, said plughavingw a reduced Unthreaded lowei-"portion spaced from theinterior wall of the casing' andan axial recess 1n its bottom,v a valve"betweeny the lower end of the plugl and the bottom of the casing and *having a conical portion cooperating with the inlet passage to-nornially close the same and' having a reduced downwardly `extendingy axialstem engaging,

sai-d inlet passage'and an upwardly extend ing the the casing over the plug.

PATRICK J. nUBrN,

stem engaging the recess foiguidiiigV valvey in its movement, and acap on 

